# java.net.ConnectException: Address already in use: no further information
**URL:** https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212
**Category:** Gatling (Open-Source)
**Created:** [April 16, 2015, 1:15pm UTC](https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212 "2015-04-16T13:15:22Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@fugmag](https://community.gatling.io/u/fugmag)
#### Post date: [April 16, 2015, 1:15pm UTC](https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212/1 "2015-04-16T13:15:22Z")
I am trying to run a “ping-test” against a static resource to test “the infrastructure”.
my load model is as follows:
`setUp(scn.inject(constantUsersPerSec(1500) during (10 seconds))).protocols(httpConf)`
after som time running I get:
`
15:06:38.138 [WARN] i.g.h.a.AsyncHandlerActor - Request ‘shitload’ failed: java.net.ConnectException: Address already in use: no further information
`
The Gatling version is 2.1.4 and
What might be the cause?
---
### Author:  [@slandelle](https://community.gatling.io/u/slandelle)
#### Post date: [April 16, 2015, 1:37pm UTC](https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212/2 "2015-04-16T13:37:03Z")
You’re probably running out of [ephemeral ports](http://en.wikipedia.org/wiki/Ephemeral_port).
---
### Author:  [@fugmag](https://community.gatling.io/u/fugmag)
#### Post date: [April 16, 2015, 1:43pm UTC](https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212/3 "2015-04-16T13:43:18Z")
Ok, thanx.
I am running from a Windows Server 2012 R2.
Is there a way to “get more ephemeral ports”?
//Magnus
---
### Author:  [@Pierre\_DAL-PRA](https://community.gatling.io/u/Pierre_DAL-PRA)
#### Post date: [April 16, 2015, 1:54pm UTC](https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212/4 "2015-04-16T13:54:50Z")
[http://lmgtfy.com/?q=windows+change+ephemeral+port+range&l=1](http://lmgtfy.com/?q=windows+change+ephemeral+port+range&l=1) 🙂
---
### Author:  [@fugmag](https://community.gatling.io/u/fugmag)
#### Post date: [April 16, 2015, 2:27pm UTC](https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212/5 "2015-04-16T14:27:29Z")
Eh, sorry 🙂
---
### Author:  [@fugmag](https://community.gatling.io/u/fugmag)
#### Post date: [April 17, 2015, 11:36am UTC](https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212/6 "2015-04-17T11:36:18Z")
Ok, I have increased the ephemeral ports to 65.000 but when I run a test with 1500 users per second in 10 seconds the first time it is ok.
But when running it the second time I get:
> java.net.ConnectException: Address already in use: no further information
> |
>
> - |
When I run just one user I get the exception as well.
Do I need to terminate connections more than I have done in the example below? or tweak gatling.conf in someway? obviously the increase in ephemeral ports did not work.
`
**package** no.coop
**import** io.gatling.core.Predef.\_
**import** io.gatling.http.Predef.\_
**import** scala.concurrent.duration.\_
**class** isAlive **extends** Simulation{
**val** _httpConf_ = _http_
.baseURL(**“[http://grointtst.intrano.shell:88](http://grointtst.intrano.shell:88)”**)
.acceptHeader( **“text/html,application/xhtml+xml,application/xml;q=0.9,_/_;q=0.8”** )
.doNotTrackHeader( **“1”** )
.acceptLanguageHeader( **“en-US,en;q=0.5”** )
.acceptEncodingHeader( **“gzip, deflate”** )
.userAgentHeader(**“Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Firefox/31.0”**)
**val** _scn_ = _scenario_( **“isAliveSimulation”** )
.exec(_http_( **“shellload”** )
.get( **“/3mb.htm”** )
.check(_regex_( **“8.png”** )))
setUp(_scn_.inject(atOnceUsers(1))).protocols(_httpConf_)
_//setUp(scn.inject(constantUsersPerSec(1500) during (10 seconds))).protocols(httpConf)_
}
`
---
### Author:  [@fugmag](https://community.gatling.io/u/fugmag)
#### Post date: [April 17, 2015, 12:48pm UTC](https://community.gatling.io/t/java-net-connectexception-address-already-in-use-no-further-information/2212/7 "2015-04-17T12:48:12Z")
I also get:
`
java.net.ConnectException: No buffer space available (maximum 4 ( 0,27%)
connections reached?): connect
`